Specs:

• Constructed from 1200D polyester
• 3M reflective strip
• One main compartment with mesh inner pockets (large and medium models are expandable)
• Mounts to seat with two buckled seat straps and one velcro seatpost strap
• Velcro Straps
• 6.3x3.1x2.9 (XS)"
• 25 c.i.